From: Chengwen Feng <fengchengwen@huawei.com>
Date: Fri, 10 Apr 2020 11:09:26 +0000 (+0800)
Subject: net/hns3: clear residual flow rules on init
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=31cdde02f0be730fc1b9b12a8b53f8a04fa423fc;p=dpdk.git

net/hns3: clear residual flow rules on init

This patch fixes that the flow director rules are not cleared during
initialization, which lead to remaining flow director rules after upper
application (such as testpmd) restarted.

Fixes: fcba820d9b9e ("net/hns3: support flow director")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
---

diff --git a/drivers/net/hns3/hns3_fdir.c b/drivers/net/hns3/hns3_fdir.c
index a395eb1f83..26c3117580 100644
--- a/drivers/net/hns3/hns3_fdir.c
+++ b/drivers/net/hns3/hns3_fdir.c
@@ -772,6 +772,20 @@ static int hns3_config_action(struct hns3_hw *hw, struct hns3_fdir_rule *rule)
 	return hns3_fd_ad_config(hw, ad_data.ad_id, &ad_data);
 }
 
+static int hns3_fd_clear_all_rules(struct hns3_hw *hw, uint32_t rule_num)
+{
+	uint32_t i;
+	int ret;
+
+	for (i = 0; i < rule_num; i++) {
+		ret = hns3_fd_tcam_config(hw, true, i, NULL, false);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
 int hns3_fdir_filter_init(struct hns3_adapter *hns)
 {
 	struct hns3_pf *pf = &hns->pf;
@@ -785,6 +799,13 @@ int hns3_fdir_filter_init(struct hns3_adapter *hns)
 		.hash_func = rte_hash_crc,
 		.hash_func_init_val = 0,
 	};
+	int ret;
+
+	ret = hns3_fd_clear_all_rules(&hns->hw, rule_num);
+	if (ret) {
+		PMD_INIT_LOG(ERR, "Clear all fd rules fail! ret = %d", ret);
+		return ret;
+	}
 
 	fdir_hash_params.socket_id = rte_socket_id();
 	TAILQ_INIT(&fdir_info->fdir_list);